The Siemens SENTRON 3VA2163-5HN32-0KH0 is a 3-pole molded case circuit breaker (MCCB) rated for 63 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. Breaking capacity hits 187 kA at 240 V AC and still delivers 121 kA at 415 V, which puts it in the high-interrupting tier for industrial panel feeders and large motor branch circuits. The frame itself is rated for 756 A maximum, so this 63 A trip unit sits well within the frame's structural capacity.
The 63 A continuous rating is flat from 40 °C to 70 °C, so you don't have to oversize for a hot panel — that's a real advantage when the enclosure sits near a furnace line or in a non-conditioned electrical room. The 187 kA at 240 V and 121 kA at 415 V tell you this breaker can handle high available fault current without cascading upstream; it's sized for main or large subfeed duty where the transformer is close. At 690 V the breaking capacity drops to 3.7 kA, so it's not a 690 V main breaker — keep it on the 240–500 V range where it earns its keep.
Dimensions are 86 mm deep, 105 mm wide, 181 mm tall — a standard 3-pole MCCB footprint that fits DIN-rail or direct-mount panel layouts common in industrial switchboards.
Communication function is not built in; this is a standalone breaker without integrated fieldbus or Ethernet. Power loss is 4 W maximum, negligible for panel thermal budgeting.